US20210244766A1 - Tissue healing agent - Google Patents
Tissue healing agent Download PDFInfo
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- US20210244766A1 US20210244766A1 US17/250,167 US201917250167A US2021244766A1 US 20210244766 A1 US20210244766 A1 US 20210244766A1 US 201917250167 A US201917250167 A US 201917250167A US 2021244766 A1 US2021244766 A1 US 2021244766A1
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Definitions
- the present invention relates to a pharmaceutical composition for tissue healing, and a method for producing the same.
- the present invention relates to a tissue healing agent containing drug-treated adherent cells derived from mesenchymal tissue or culture supernatant thereof, and a method for producing the same.
- Non-Patent Document 1 tissue is considered as a source of stem cells (ASCs) (Non-Patent Document 1), and ASCs are known to have therapeutic effects in various areas (Non-Patent Document 2).
- ADMPCs adipose tissue-derived multilineage progenitor cells
- mesenchymal tissue-derived cells have been shown to be useful in regenerative medicine involving tissue healing. Accordingly, further improvement of their healing ability is desired.
- Patent Document 1 WO 2008/153179
- Non-Patent Document 1 Zuk P A, Zhu M, Ashjian P, et al. Human adipose tissue is a source of multipotent stem cells. MoI Biol Cell 2002; 13: 4279-4295.
- Non-Patent Document 2 Japanese Journal of Transfusion and Cell Therapy, Vol. 59, No. 3: 450-456, 2013
- adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS (lipopolysaccharide), or culture supernatant thereof have extremely high tissue healing ability, and completed the present invention.
- the present invention provides the followings:
- a pharmaceutical composition for tissue healing including adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof, and a pharmaceutically acceptable carrier.
- composition according to (1) wherein the physiologically active polypeptide is one or more polypeptides selected from the group consisting of inflammatory cytokine, inflammatory cytokine-inducing polypeptide, growth factor, chemokine, hormone and interferon.
- the physiologically active polypeptide is one or more polypeptides selected from the group consisting of inflammatory cytokine, inflammatory cytokine-inducing polypeptide, growth factor, chemokine, hormone and interferon.
- physiologically active polypeptide is one or more polypeptides selected from the group consisting of interferon- ⁇ (IFN- ⁇ ), interferon gamma (IFN ⁇ ), interleukin-1 alpha (IL-1 ⁇ ), interleukin-1 beta (IL-1 ⁇ ), interleukin-17A (IL-17A), tumor necrosis factor alpha (TNF ⁇ ), tumor necrosis factor beta (TNF ⁇ ), type I interferon (INF-I), transforming growth factor ⁇ (TGF ⁇ ), epidermal growth factor (EGF) and fibroblast growth factor (FGF).
- IFN- ⁇ interferon- ⁇
- IFN ⁇ interferon gamma
- IL-1 ⁇ interleukin-1 alpha
- IL-1 beta interleukin-1 beta
- IL-17A interleukin-17A
- TGF ⁇ tumor necrosis factor alpha
- TGF ⁇ tumor necrosis factor beta
- TGF ⁇ transforming growth factor ⁇
- EGF epidermal growth factor
- FGF fibroblast growth factor
- adherent cells derived from mesenchymal tissue are mesenchymal tissue-derived stem cells (MSCs), adipose tissue-derived multilineage progenitor cells (ADMPCs), placenta tissue-derived cells, umbilical cord tissue-derived cells, cells derived from tissue of placenta and its appendages, or bone marrow tissue- or synovium tissue-derived cells.
- MSCs mesenchymal tissue-derived stem cells
- ADMPCs adipose tissue-derived multilineage progenitor cells
- placenta tissue-derived cells derived cells derived from tissue of placenta and its appendages
- bone marrow tissue- or synovium tissue-derived cells are bone marrow tissue- or synovium tissue-derived cells.
- tissue healing is tissue protection, repair of tissue/cell injury, promotion of proliferation of cells constituting a tissue, suppression of tissue inflammation or reconstruction of tissue form.
- tissue healing is tissue healing in chronic phase disease.
- a method for producing a pharmaceutical composition for tissue healing including the steps of:
- step (b) mixing the cells treated in step (a) or culture supernatant thereof with a pharmaceutically acceptable carrier.
- physiologically active polypeptide is one or more polypeptides selected from the group consisting of inflammatory cytokine, inflammatory cytokine-inducing polypeptide, growth factor, chemokine, hormone and interferon.
- the physiologically active polypeptide is one or more polypeptides selected from the group consisting of interferon- ⁇ (IFN- ⁇ ), interferon gamma (IFN ⁇ ), interleukin-1 alpha (IL-1 ⁇ ), interleukin-1 beta (IL-1 ⁇ ), interleukin-17A (IL-17A), tumor necrosis factor alpha (TNF ⁇ ), tumor necrosis factor beta (TNF ⁇ ), type I interferon (INF-I), transforming growth factor ⁇ (TGF ⁇ ), epidermal growth factor (EGF) and fibroblast growth factor (FGF).
- IFN- ⁇ interferon- ⁇
- IFN ⁇ interferon gamma
- IL-1 ⁇ interleukin-1 alpha
- IL-1 beta interleukin-1 beta
- IL-17A interleukin-17A
- TGF ⁇ tumor necrosis factor alpha
- TGF ⁇ tumor necrosis factor beta
- TGF ⁇ transforming growth factor ⁇
- EGF epidermal growth factor
- FGF fibroblast growth
- adherent cells derived from mesenchymal tissue are mesenchymal tissue-derived stem cells (MSCs), adipose tissue-derived multilineage progenitor cells (ADMPCs), placenta tissue-derived cells, umbilical cord tissue-derived cells, cells derived from tissue of placenta and its appendages, or bone marrow tissue- or synovium tissue-derived cells.
- MSCs mesenchymal tissue-derived stem cells
- ADMPCs adipose tissue-derived multilineage progenitor cells
- placenta tissue-derived cells derived cells derived from tissue of placenta and its appendages
- bone marrow tissue- or synovium tissue-derived cells are bone marrow tissue- or synovium tissue-derived cells.
- tissue healing is tissue protection, repair of tissue/cell injury, promotion of proliferation of cells constituting a tissue, suppression of tissue inflammation, wound healing, or reconstruction of tissue form.
- tissue healing is tissue healing in chronic phase disease.
- a pharmaceutical composition having an extremely high tissue healing ability can be obtained.
- the pharmaceutical composition of the present invention is useful for tissue healing in chronic phase-tissue injury and the like.
- FIG. 1 is a graph comparing the produced amount of adiponectin in adipose tissue-derived multilineage progenitor cells (ADMPCs) treated with IL-1 ⁇ (left) and the produced amount of adiponectin in ADMPCs not treated with IL-1 ⁇ (right).
- the vertical axis represents the amount of adiponectin produced.
- FIG. 2 is a graph comparing the produced amount of hepatocyte growth factor (HGF) in ADMPCs treated with IL-1 ⁇ (left) and the produced amount of HGF in ADMPCs not treated with IL-1 ⁇ (right).
- the vertical axis represents the amount of HGF produced.
- FIG. 3 is an image of a Sirius red-stained tissue section showing decrease in intrahepatic fibers by ADMPCs treated with IL-1 ⁇ in non-alcoholic steatohepatitis (NASH) model mice.
- the result of a carrier administered group is in the left, the result of an administrated group with ADMPCs not treated with IL-1 ⁇ is in the middle, and the result of an administered group with ADMPCs treated with IL-1 ⁇ is in the right.
- the magnification is 50 times.
- FIG. 4 is an image of a HE-stained tissue section showing reduction in liver tissue injury by ADMPCs treated with IL-1 ⁇ in non-alcoholic steatohepatitis (NASH) model mice.
- the result of a carrier administered group is in the left, the result of an administrated group with ADMPCs not treated with IL-1 ⁇ is in the middle, and the result of an administered group with ADMPCs treated with IL-1 ⁇ is in the right.
- the magnification on the top panels is 50 times, and the magnification on the bottom panels is 200 times.
- FIG. 5 is a graph comparing reduction in liver tissue injury by ADMPCs treated with IL-1 ⁇ and ADMPCs not treated with IL-1 ⁇ in non-alcoholic steatohepatitis (NASH) model mice using NAFLD Activity Score.
- the p value is according to Mann-Whitney's U test.
- FIG. 6 is a graph showing improvement in left ventricular ejection fraction by ADMPCs treated with IL-1 ⁇ and ADMPCs not treated with IL-1 ⁇ in severe myocardial infarction model animals (pigs).
- the vertical axis ( ⁇ EF %) represents change (%) in left ventricular ejection fraction before and after administration of cells.
- the white bar represents a control group to which cells are not administered
- the hatched bar represents a group to which ADMPCs not treated with IL-1 ⁇ are administered
- the black bar represents a group to which ADMPCs treated with IL-1 ⁇ are administered.
- FIG. 7 is a graph showing investigation results of reduction of liver tissue injury in chronic hepatitis model animals (rats) by ADMPCs treated with IL-1 ⁇ (ADMPC+), placenta-derived cells treated with IL-1 ⁇ (AM+), and bone marrow-derived mesenchymal stem cells treated with IL-1 ⁇ (BM+), and ADMPCs not treated with IL-1 ⁇ (ADMPC ⁇ ), and bone marrow-derived mesenchymal stem cells not treated with IL-1 ⁇ (BM ⁇ ).
- the vertical axis shows areas of Sirius Red staining regions (fibrosis region). p-values are as follows: ADMPC ⁇ vs. ADMPC+ 0.018, BM ⁇ vs.
- FIG. 8 is a graph showing investigation results of treatment effect of cardiac tissue in severe myocardial infraction model animals (nude rats) by bone marrow-derived mesenchymal stem cells treated with IL-1 ⁇ (BM+), ADMPCs treated with IL-1 ⁇ (ADMPC+), bone marrow-derived mesenchymal stem cells not treated with IL-1 ⁇ (BM ⁇ ), and ADMPCs not treated with IL-1 ⁇ (ADMPC ⁇ ).
- the vertical axis shows myocardial thickness after myocardial infraction.
- p-values are as follows: control vs. BM ⁇ 0.022479, control vs. BM+ 0.008113, BM ⁇ vs. BM+ 0.045328, control vs. ADMPC ⁇ 0.008113, control vs. ADMPC+ 0.019964, ADMPC ⁇ vs. ADMPC+ 0.014214.
- FIG. 9 is a drawing showing cutting sections of lungs fixed with formalin in Example 8.
- FIG. 10 is a graph showing investigation results of treatment effects of lung tissue in pulmonary fibrosis model animals (mice) by ADMPCs treated with IL-1 ⁇ , culture supernatant thereof, and saline.
- the vertical axis shows pulmonary fibrosis scores.
- the present invention provides a pharmaceutical composition for tissue healing, including adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof, and a pharmaceutically acceptable carrier.
- the physiologically active polypeptide is a polypeptide that acts on a certain physiological regulatory function of the living body.
- Polypeptide refers to a substance in which two or more amino acid residues are linked to each other via a peptide bond.
- LPS Various types of LPS are known, and any LPS may be used.
- the physiologically active polypeptide used in the present invention also includes its variants.
- the variant of the physiologically active polypeptide is one having an activity capable of, when acted on mesenchymal tissue-derived adherent cells, providing mesenchymal tissue-derived adherent cells or culture supernatant thereof that can be used for tissue healing of the present invention.
- the variant refers to a polypeptide in which the amino acid residue constituting the polypeptide has been substituted, deleted or added, with respect to the original peptide.
- the number of amino acid residues to be substituted, deleted or added is not particularly limited. For example, one to several amino acid residues may be substituted, deleted or added.
- the variant polypeptide may have an amino acid sequence identity of 800 or more, preferably 90% or more, for example 95% or more, 97% or more, or 990 or more, with respect to the original polypeptide.
- the variant of the physiologically active polypeptide may be one in which the amino acid residue constituting the polypeptide is modified. The modification may be with any type of label.
- the modification may be chemical modification such as methylation, halogenation or glycosylation, or labeling such as fluorescence labeling or radioactive labeling.
- the variant of the physiologically active polypeptide may be one in which some amino acid residues are linked to each other via a bond other than a peptide bond.
- the physiologically active polypeptide used in the present invention may be any polypeptide. Suitable physiologically active polypeptides used in the present invention are preferably cytokine, in particular one or more polypeptides selected from the group consisting of inflammatory cytokine, inflammatory cytokine-inducing polypeptide, growth factor, hormone and interferon.
- the inflammatory cytokine is a cytokine involved in pathogenesis of inflammation.
- the inflammatory cytokine-inducing polypeptide is a polypeptide having an effect of increasing the amount of inflammatory cytokine or enhancing the activity thereof.
- the growth factor is a polypeptide that promotes the growth or differentiation of specific cells in vivo.
- the chemokine is a fundamental protein that exhibits the action via a G protein coupled receptor and is a group of cytokines.
- the hormone is a substance that is produced in vivo, transported via body fluids, and affects the activity of specific cells, tissue or organ.
- the interferon is a group of cytokines produced in response to entry of foreign substances such as virus, pathogen or tumor cells in vivo.
- Various inflammatory cytokines, inflammatory cytokine-inducing polypeptides, growth factors and interferons are publicly known and any of them may be used.
- the cytokines include, but are not limited to, IL-1 ⁇ , IL-1 ⁇ , IL-2 to IL-35, OSM (Oncostatin M), LIF, CNTF, CT-1, TNF- ⁇ , TNF- ⁇ , BAFF, FasL, RANKL and TRAIL.
- the inflammatory cytokines include, but are not limited to, IL-1 ⁇ , IL-1 ⁇ , IL-6, IL-8, IL-12, IL-18 and TNF ⁇ .
- the inflammatory cytokine-inducing polypeptides include, but are not limited to, IL-17A.
- the growth factors include, but are not limited to, activin A, ANGPTL5, BAFF, BD-2, BD-3, BNDF, BMP-1 to 7, DKK1, EGF, EG-VEGF, FGF-1 to 21, G-CSF, GM-CSF, HGF, IGF-1, IGF-2, platelet-derived growth factor (PDGF)-AA, PDGF-AB, PDGF-BB, R-spondin-1 to 3, SCF, galectin-1 to 3, GDF-11, GDNF, pleiotrophin, TGF- ⁇ , TGF- ⁇ , TPO (thrombopoietin), TSLP, vascular endothelial growth factor (VEGF) and ciliary neurotrophic factor (CNTF).
- activin A ANGPTL5, BAFF, BD-2, BD-3, BNDF, BMP-1 to 7, DKK1, EGF, EG-VEGF, FGF-1 to 21, G-CSF, GM-CSF, HGF, IGF-1, IGF
- the chemokines include, but are not limited to, CCL1 to CCL28 and CXCL1 to CXCL10.
- the hormones include, but are not limited to, Calcitonin, Parathormone, Glucagon, Erythropoietin, Leptin, ANP, BNP, CNP, Oxytocin, Vasopressin, TRH (thyrotropin releasing hormone), TSH (thyroid stimulating hormone), CRH (corticotropin releasing hormone), ACTH (adrenocorticotropin hormone), GRH (gonadotropin releasing hormone), FSH (follicle stimulating hormone), LH (luteinizing hormone), SOM (somatostatin), GRH (growth hormone releasing hormone), GH (growth hormone), PRH (prolactin releasing hormone), PIH (prolactin inhibiting hormone) and Prolactin.
- the interferons include, but are not limited to, IFN- ⁇ , IFN- ⁇ , IFN- ⁇ and IFN-I.
- Suitable physiologically active peptides used in the present invention are inflammatory cytokine, inflammatory cytokine-inducing polypeptide, growth factor and interferon.
- preferable examples include, but are not limited to, IFN- ⁇ , IFN- ⁇ , IL-1 ⁇ , IL-1 ⁇ , IL-17A, TNF ⁇ , TNF- ⁇ , INF-I, TGF ⁇ , EGF and FGF.
- the tissue healing refers to restoring a tissue to a normal state or bringing a tissue closer into a normal state, including tissue protection, repair of tissue/cell injury, promotion of proliferation of cells constituting a tissue, suppression of tissue inflammation, wound healing, and reconstruction of the tissue form. Because the cells or culture supernatant thereof in the pharmaceutical composition of the present invention are useful for tissue protection, promotion of proliferation of cells constituting a tissue, etc., the pharmaceutical composition of the present invention is preferably used for tissue healing in chronic phase disease.
- Tissues to be healed by the pharmaceutical composition of the present invention are any tissue of animal and are not particularly limited.
- the tissues include, but are not limited to, liver, pancreas, kidney, muscle, bone, cartilage, bone marrow, stomach, intestine, blood, nerve, skin, mucous membrane, heart and hair.
- Suitable tissues to be healed by the pharmaceutical composition of the present invention are liver, nerve, skin, mucous membrane and heart. Therefore, the pharmaceutical composition of the present invention is preferably used for treatment of, for example, liver cirrhosis, hepatitis and NASH (nonalcoholic steatohepatitis), and is also effective for chronic phase disease.
- the cells or culture supernatant thereof that are an active ingredient of the pharmaceutical composition of the present invention are adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof.
- the pharmaceutical composition of the present invention may be administered to a subject of the same animal species as, or different animal species from which the active ingredient cells or culture supernatant thereof are derived.
- the pharmaceutical composition of the present invention including adherent cells derived from human-derived mesenchymal tissue treated with an inflammatory cytokine-inducing agent or culture supernatant thereof may be administered to a human subject.
- the cells or culture supernatant thereof in the pharmaceutical composition of the present invention may be from the same human subject as the human subject to be administered, or may be from a different human subject from the human subject to be administered.
- mesenchymal tissue-derived adherent cells may be used in the present invention.
- the mesenchymal tissue-derived adherent cells may be commercially available ones, for example, distributed ones from organizations such as American Type Culture Collection (ATCC) (US) and NITE (Japan).
- ATCC American Type Culture Collection
- NITE Netowth Generation
- mesenchymal tissue-derived adherent cells may be obtained from mesenchymal tissue. Means and methods for preparing mesenchymal tissue-derived adherent cells from mesenchymal tissue are publicly known.
- mesenchymal tissue-derived adherent cells include, but are not limited to, mesenchymal tissue-derived stem cells (MSCs) such as adipose tissue-derived stem cells (ASCs), adipose tissue-derived multilineage progenitor cells (ADMPCs), Muse cells, cells derived from bone marrow tissue, placenta tissue, umbilical cord tissue, amniotic tissue, cartilage tissue, periosteum tissue, synovium tissue, skeletal muscle tissue, and tissue of placenta and its appendages, stem cells, stromal cells, and menstrual blood cells.
- MSCs mesenchymal tissue-derived stem cells
- ASCs adipose tissue-derived stem cells
- ADMPCs adipose tissue-derived multilineage progenitor cells
- Muse cells cells derived from bone marrow tissue, placenta tissue, umbilical cord tissue, amniotic tissue, cartilage tissue, periosteum tissue
- mesenchymal tissue When the cells are obtained from mesenchymal tissue, they may be isolated from any mesenchymal tissue.
- mesenchymal tissue include, but are not limited to, adipose tissue, bone marrow tissue, placenta tissue, umbilical cord tissue, amniotic tissue, cartilage tissue, periosteum tissue, synovium tissue, skeletal muscle tissue, placenta tissue and menstrual blood.
- Preferable mesenchymal tissues include adipose tissue, bone marrow tissue, synovium tissue, placenta tissue, umbilical cord tissue, and tissue of placenta and its appendages.
- adipose tissue is preferable because it is contained in a large amount in the body and many cells can be extracted.
- Adherent cells can be obtained by extracting mesenchymal tissue from the body, placing and culturing the tissue in a culture vessel, and selectively acquiring cells adhering to the vessel.
- Mesenchymal tissue can be extracted using publicly known means and methods such as excision and aspiration.
- the extracted mesenchymal tissue may be cultured as it is, or if necessary, the extracted mesenchymal tissue may be minced or broken, followed by removing of red blood cells to culture the obtained cell population.
- These treating methods and means, and cell culturing means and methods are publicly known, and can be appropriately selected.
- Mesenchymal tissue-derived adherent cells may be obtained, for example, by treating the cells attached to the culture vessel with an enzyme such as trypsin.
- Treatment of mesenchymal tissue-derived adherent cells with a physiologically active polypeptide or LPS may be carried out by contacting the cells with cytokine in a publicly known manner. Typically, this treatment may be carried out by culturing mesenchymal tissue-derived adherent cells for a certain period of time in a medium containing an appropriate concentration of physiologically active polypeptide or LPS. Usually, mesenchymal tissue-derived adherent cells are cultured in several nanograms/ml to several hundred nanograms/ml of inflammatory cytokine or a medium to which inflammatory cytokine has been added. The medium for use in culture may be a publicly known one. The culturing time and culturing temperature may also be appropriately selected.
- mesenchymal tissue-derived adherent cells may be cultured to increase the number of cells, before treatment with a physiologically active polypeptide or LPS.
- a desired subpopulation may be obtained from a population of mesenchymal tissue-derived adherent cells, and if necessary, the subpopulation may be cultured to increase the number of cells, before treatment with a physiologically active polypeptide or LPS.
- the number of types of physiologically active polypeptide or LPS for use in treatment of mesenchymal tissue-derived adherent cells may be one or two or more.
- Mesenchymal tissue-derived adherent cells treated with a physiologically active polypeptide or LPS increase expression and production of one or more factors that contribute to tissue repair (such as polypeptide, growth factor and/or enzyme involved in tissue healing), or become to express and produce the same.
- factors include, but are not limited to, adiponectin, HGF, CSF2 (GM-CSF), CSF3 (G-CSF), LIF, MMP family factors, FGF family factors, ADAM family factors, angiopoietin-like protein family factors, pleiotrophin, R-spondin family factors and VEGF family factors.
- CSF2 or CSF3 contributes not only to activation of hematopoietic stem cells but also to stem cell proliferation and/or angiogenesis in many tissues or organs including brain, heart, lung, and liver, thereby contributing to tissue repair. Accordingly, cells that express and produce these factors at higher level are preferred.
- the increase in expression or production of the above factor may be, for example, 10 times or more, preferably 30 times or more, more preferably 50 times or more, still more preferably 100 times or more, compared to that before treatment.
- Culture supernatant of mesenchymal tissue-derived adhesive cells treated with a physiologically active polypeptide or LPS may be obtained by methods described below.
- Culture in a medium containing a physiologically active polypeptide or LPS may be performed in a similar manner to the treatment with a physiologically active polypeptide or LPS as described above.
- Conditions of cell culture such as medium components, culture time, culture temperature can be appropriately selected and changed according to cell type, cell number needed, use of cells, and so on of cells.
- Culture supernatant may be concentrated using a known method for concentration such as centrifugation, filtration by a filter, precipitation with ammonium sulfate, freeze-drying, and so on.
- the pharmaceutical composition of the present invention can be produced by mixing mesenchymal tissue-derived adherent cells treated with a physiologically active polypeptide or LPS, or culture supernatant thereof as described above with a pharmaceutically acceptable carrier.
- a pharmaceutically acceptable carrier are publicly known and may be appropriately selected for use.
- the cells may be suspended in a carrier such as purified water, saline or phosphate buffered saline.
- the pharmaceutical composition of the present invention comprising culture supernatant is preferable in that there is no matter such as occlusion of blood vessels and needles with cells when administered.
- the dosage form of the pharmaceutical composition of the present invention is not particularly limited, but may be a solution, semisolid or solid.
- the administration method of the pharmaceutical composition of the present invention is also not limited, but may include local injection, intravenous injection or infusion, application to an affected area, administration to an affected area via a catheter, or direct transplantation to tissues such as liver by a surgical procedure.
- the pharmaceutical composition of the present invention may be transplanted in the form of cell sheet, cell mass, layered cell sheet, etc.
- the administration route and dose of the pharmaceutical composition of the present invention may be appropriately determined in consideration of the type and site of the tissue to be healed, the degree of disease, the condition of the subject and the like.
- the pharmaceutical composition of the present invention may contain cells other than adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS.
- the pharmaceutical composition of the present invention may contain components other than the culture supernatant of mesenchymal tissue-derived adhesive cells treated with a physiologically active polypeptide or LPS.
- the present invention provides use of adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof in producing a medicament for tissue healing.
- the present invention provides use of adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof for tissue healing.
- the present invention provides a method for tissue healing in a subject in need of tissue healing, including administering to the subject adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof.
- the present invention provides a method for producing a pharmaceutical composition for tissue healing, including the steps of:
- step (b) mixing the cells treated in step (a) or culture supernatant thereof with a pharmaceutically acceptable carrier.
- the present invention provides a method for producing cells for tissue healing, including treating adherent cells derived from mesenchymal tissue with a physiologically active polypeptide or LPS.
- the present invention provides a method for producing cell culture supernatant for tissue healing, which comprises treating mesenchymal tissue-derived adhesive cells with a physiologically active polypeptide or LPS, and obtaining culture supernatant thereof.
- the adipose tissue was minced and then digested in Hanks' buffered saline solution (HESS) containing 0.008% Liberase (Roche Lifescience) with shaking in a water bath at 37° C. for 1 hour.
- HESS Hanks' buffered saline solution
- the digested product was filtered through Cell Strainer (BD Bioscience), followed by centrifuging at 800 ⁇ g for 10 minutes.
- the obtained cell population containing ADMPCs were seeded in DMEM containing 10% fetal bovine serum (Hyclone) to allow for attachment of the cells, followed by washing and treatment with EDTA to yield ADMPCs.
- the ADMPCs in a medium (60% DMEM-low glucose, 40% MCDB201, 10 ⁇ g/mL EGF, 1 nM dexamethasone, 100 ⁇ M ascorbic acid and 5% FBS) were seeded on a human fibronectin-coated dish and subcultured 3 to 8 times to yield cultured ADMPCs.
- IL-1 ⁇ was added to a medium (60% DMEM-low glucose, 40% MCDB 201, 10 ⁇ g/mL EGF, 1 nM dexamethasone, 100 ⁇ M ascorbic acid and 5% FBS) to a concentration of 10 ng/ml.
- the cultured ADMPCs obtained in (ii) above were cultured in the IL-1 ⁇ -containing medium for 72 hours to measure adiponectin and hepatocyte growth factor (HGF) produced in the medium.
- the measurement of adiponectin was performed using the ELISA kit of abcam (Catalog No. ab99968).
- the measurement of HGF was performed using the ELISA kit of R & D System (Catalog No. DHG00).
- ADMPCs were cultured in the above medium except that IL- ⁇ was not added.
- FIG. 1 The measurement results of amount of adiponectin produced are shown in FIG. 1 .
- Production of adiponectin from ADMPCs not treated with IL-1 ⁇ was not found, whereas it was confirmed that adiponectin was produced from ADMPCs treated with IL-1 ⁇ .
- the measurement results of amount of HGF produced are shown in FIG. 2 .
- the amount of HGF produced from ADMPCs treated with IL-1 ⁇ was increased by about 1.7 times as compared to the amount of HGF produced from ADMPCs not treated with IL-1 ⁇ .
- Example 2 Collection of adipose tissue from a human subject, isolation and culture of ADMPCs, and IL-1 ⁇ treatment were performed in the same manner as in Example 1, except that the concentration of IL-1 ⁇ in the medium was 5 ng/ml.
- HE hematoxylin-eo
- FIG. 3 The results of Sirius red staining of liver tissue sections from mice obtained at week 9 of the study are shown in FIG. 3 .
- FIG. 3 The results of Sirius red staining of liver tissue sections from mice obtained at week 9 of the study are shown in FIG. 3 .
- liver tissue sections from mice obtained at week 9 of the study are shown in FIG. 4 .
- FIG. 4 The results of HE staining of liver tissue sections from mice obtained at week 9 of the study are shown in FIG. 4 .
- injury to liver tissue represented by vacuolation was reduced, compared to the livers from carrier administered mice and mice to which ADMPCs not treated with IL-1 ⁇ was administered.
- the degree of liver tissue injury in mice obtained at week 9 of the study was evaluated according to the NAFLED activity score.
- the evaluation method of NAFLED activity score is shown in Table 1.
- the results are shown in FIG. 5 .
- the NAFLD activity score was significantly lower in the livers from mice to which ADMPCs treated with IL-1 ⁇ was administered, compared to the livers from carrier administered mice and mice to which ADMPCs not treated with IL-1 ⁇ was administered. It was confirmed that injury to liver tissue represented by vacuolation, inflammation and fatty change was greatly reduced.
- ADMPCs treated with IL-1 ⁇ are found to be effective in healing injured tissue, and be useful for tissue protection, repair of tissue/cell injury, suppression of tissue inflammation and promotion of proliferation of cells constituting a tissue. It is considered that these tissue healings enables reconstruction of the tissue form and wound healing. Moreover, because these effects were observed in mice in which liver injury was induced by streptozotocin and high-fat diet, it can be said that IL-1 ⁇ -treated ADMPCs are effective for tissue healing in chronic phase disease.
- a severe myocardial infarction model was created using 8 weeks old pigs by two-stage balooning/reperfusion method.
- a 6F guide catheter was transcutaneously placed through the femoral artery on the opening of the left coronary artery, a guide wire was inserted through the catheter into the first diagonal artery (#9 in the AHA classification), and preconditioning was performed by conducting ballooning (obstruction reopening) with the aid of the guide.
- a guidewire was inserted into the left anterior descending coronary artery (#6 to #8 in the AHA classification), and ballooning (obstruction reopening) was performed at the left anterior descending coronary artery immediately below the bifurcation of the left circumflex coronary artery (#6 in the AHA classification) to produce a myocardial ischemic region.
- ballooning obstruction reopening
- individuals with a cardiac ejection fraction of 40% or less in cardiac ultrasonography were subjected to the study as a severe heart failure model.
- a control group (cells were not administrated), a group to which non-activated cells (ADMPCs) were administered, and a group to which IL-1 ⁇ activated cells (72 hours cultured) IL-1 ⁇ -activated ADMPCs) were administered.
- ADMPCs and IL-1 ⁇ -activated ADMPCs were prepared in the same manner as in Example 1.
- cardiac MRI was performed 3 months after administration (Signa EXCITE XI TwinSpeed 1.5T Ver. 11.1, GE Healthcare), using Cardiac Vx (GE Healthcare) as analysis software, to measure left ventricular end-diastolic and end-systolic volumes.
- Left ventricular ejection fraction 100 ⁇ (left ventricular end-diastolic volume ⁇ left ventricular end-systolic volume)/(left ventricular end-diastolic volume)
- the left ventricular ejection fraction was decreased in the control group, whereas the left ventricular ejection fraction was improved in the two groups to which cells were administered, in particular, when IL-1 ⁇ -activated cells were administered, the left ventricular ejection fraction was markedly improved.
- Example 4 In Vivo Tissue healing Effects of ADMPCs Treated with IL-1 ⁇ , Bone Marrow-Derived Mesenchymal Stem Cells Treated with IL-1 ⁇ , and Placenta-Derived Cells Treated with IL-1 ⁇ -Reduction of Liver Tissue Fibrosis
- Extra adipose tissue to be discarded was provided during liposuction surgery from six women from whom informed consent was obtained.
- the adipose tissue was minced and then digested in Hanks' buffered saline solution (HBSS) containing 0.008% Liberase (Roche Lifescience) in a water bath at 37° C. for 1 hour with shaking.
- HBSS Hanks' buffered saline solution
- the digested product was filtered through Cell Strainer (BD Bioscience), followed by centrifuging at 800 ⁇ g for 10 minutes.
- the obtained cell population containing ADMPCs were seeded in DMEM containing 10% fetal bovine serum (Hyclone) to allow for attachment of the cells, followed by washing and treatment with EDTA to yield ADMPCs.
- the ADMPCs in a medium (60% DMEM-low glucose, 40% MCDB201, 10 ⁇ g/mL EGF, 1 nM dexamethasone, 100 ⁇ M ascorbic acid and 5% FBS) were seeded on a human fibronectin-coated dish and subcultured 3 to 8 times to yield cultured ADMPCs.
- Bone marrow-derived mesenchymal stem cells and placenta-derived cells were seeded to human fibronectin coated dishes with a medium (60% DMEM-low glucose, 40% MCDB201, 10 ⁇ g/mL EGF, 1 nM dexamethasone, 100 ⁇ M ascorbic acid, and 5% FBS), and subcultured three times to subjected to experiments.
- a medium (60% DMEM-low glucose, 40% MCDB201, 10 ⁇ g/mL EGF, 1 nM dexamethasone, 100 ⁇ M ascorbic acid, and 5% FBS
- IL-1 ⁇ was added to a medium (60% DMEM-low glucose, 40% MCDB 201, 10 ⁇ g/mL EGF, 1 nM dexamethasone, 100 ⁇ M ascorbic acid and 5% FBS) to a concentration of 5 ng/ml.
- the cultured ADMPCs, bone marrow-derived mesenchymal stem cells, and placenta-derived cells obtained in section 2 above were cultured in the IL-1 ⁇ -containing medium as described above for 72 hours.
- ADMPCs, bone marrow-derived mesenchymal stem cells, and placenta-derived cells were cultured in the above medium without addition of IL-1 ⁇ .
- ADMPCs treated with IL-1 ⁇ , bone marrow-derived mesenchymal stem cells treated with IL-1 ⁇ , and placenta-derived cells treated with IL-1 ⁇ were suspended in a carrier to a concentration of 1.2 ⁇ 10 5 cells/ml. These cells were administered to chronic hepatitis model animals made by a hepatitis-inducing agent administration to examine healing of the liver tissue.
- Chronic hepatitis model animals were made by administration of a hepatitis-inducing agent.
- Chronic hepatitis model rats were obtained by intraperitoneal injection of 300 ⁇ L/kg (each time) carbon tetrachloride twice a week for four weeks.
- ADMPCs, bone marrow-derived mesenchymal stem cells or placenta-derived cells (3 ⁇ 10 5 /kg) with/without IL-1 ⁇ treatment, and a carrier were administered to tail vein of these rats.
- animals were euthanized under deep anesthesia, livers were removed, and fixed them with neutral buffered formalin. These liver samples were paraffin embedded, obtained thin slices, and the obtained liver tissue slices were subjected to Sirius Red staining.
- results of Sirius Red staining of rat liver tissue obtained on 5th week from the beginning of the test are shown in FIG. 7 .
- Reduction of fiber deposition in the livers stained by Sirius Red was confirmed in the livers of rats to which ADMPCs treated with IL-1 ⁇ , bone marrow-derived mesenchymal stem cells treated with IL-1 ⁇ , or placenta-derived cells treated with IL-1 ⁇ were administered, compared with the livers of rats to which ADMPCs not treated with IL-1 ⁇ , bone marrow-derived mesenchymal stem cells not treated with IL-1 ⁇ , or placenta-derived cells not treated with IL-1 ⁇ were administered.
- ADMPCs treated with IL-1 ⁇ , bone marrow-derived mesenchymal stem cells treated with IL-1 ⁇ , or placenta-derived cells treated with IL-1 ⁇ are effective in healing injured tissue. It is considered that these tissue healing enables reconstruction of the tissue form and wound healing. Moreover, because these effects were found in chronic hepatitis model animals made by administration of a hepatitis-inducing agent administration, it can be said that ADMPCs treated with IL-1 ⁇ , bone marrow-derived mesenchymal stem cells treated with IL-1 ⁇ , or placenta-derived cells treated with IL-1 ⁇ are effective in tissue healing in chronic phase disease.
- Example 5 In Vivo Tissue Healing Effect of ADMPCs Treated with IL-1 ⁇ or Bone-Marrow-Derived Mesenchymal Stem Cells Treated with IL-1 ⁇ -Improvement of Cardiac Tissue
- two IL-1 ⁇ -treated ADMPC sheets or two IL-1 ⁇ -treated bone-marrow-derived mesenchymal stem cell sheets were transplanted to the left ventricular wall of the myocardial infraction model rat under general anesthesia with left intercostal thoracotomy.
- the animals were sacrificed to remove the hearts, and the hearts were fixed with 10% neutral buffered formalin.
- These heart samples were cut into round slices, embedded in paraffin, the sliced sections were obtained, and after HE staining, the thickness of the anterior wall of the left wall, which was the site of myocardial infraction, was measured.
- ADPMCs or bone-marrow-derived mesenchymal stem cells were cultured at 37° C. for 72 hours in a medium containing IL-1 ⁇ at a concentration of 5 ng/mL in temperature-sensitive culture dishes. Cells were peeled off by incubating 20° C. or lower for 30 minutes to obtain cell sheets. The obtained sheets were used in transplantation experiments described below.
- a myocardial infarction model rat was created by ligating the coronary arteries of nude rats. Two weeks later, the chest was opened again, and two cell sheets each, containing ADMPCs or bone marrow-derived mesenchymal stem cells cultured with or without IL-1 ⁇ , were transplanted into the injured area. In the control group, sham surgery was performed with only thoracotomy.
- Rats were euthanized 4 weeks after transplantation and the hearts were removed.
- the removed hearts were fixed with 4% paraformaldehyde solution which was then replaced with 70% ethanol.
- the fixed hearts were cut into a few millimeters wide and hardened with paraffin to make blocks.
- the obtained paraffin blocks were sliced into 3 ⁇ m using a microtome, attached to slide glasses, and dried.
- the obtained thin sections were stained with hematoxylin eosin as follows.
- the thin sections were deparaffinized and washed with water.
- the sections were stained with hematoxylin solution for 10 minutes and washed with warm water for 3 minutes. After washing with water, the sections were stained with eosin for 5 minutes.
- the sections were dehydrated with alcohol. After being transparentized with xylene, the sections were sealed and observed under a microscope. The wall thickness of the anterior wall of the left ventricle, which is the infarcted area, was evaluated.
- wall thickness of the anterior wall of the left ventricle was improved, compared with the group to which the sheets of IL-1 ⁇ -untreated ADMPCs were transplanted, or the group to which the sheets of IL-1 ⁇ -untreated bone marrow-derived mesenchymal stem cell were transplanted.
- umbilical cord-derived mesenchymal stem cells (umbilical cord-derived MSCs), adipose tissue-derived stem cells (ADSCs), knee cartilage synovium-derived mesenchymal stem cells (synovium-derived MSCs), adipose tissue-derived multilineage progenitor cells (ADMPCs), placenta and its appendages-derived mesenchymal stem cells (placenta and its appendages-derived MSCs) and bone marrow-derived mesenchymal stem cells (bone marrow-derived MSCs) were used.
- Various cytokines, chemokines, growth factors and hormones were used as physiologically active polypeptides.
- cytokines IL-1 ⁇ , IL-1 ⁇ , IL3 to IL35, oncostatin M, LIF, CNTF, CT-1, TNF ⁇ , TNF ⁇ , BAFF, FasL, RANKL, TRAIL, INF- ⁇ , IFN- ⁇ , IFN- ⁇ ), chemokines (CCL1 to CCL28, CXCL1 to CXCL10), growth factors (AvinA, ANGPLT5, BD-2, BD-3, BDNF, BMP-1 to BMP-7, DKK1, EGF, EG-VEGF, FGF-1 to FGF-21, G-CSF, HGF, IGF-1, IGF-2, PDGF-AA, PDGF-BB, R-spondin-1, R-spondin-2, R-spondin-3, SCF, galectin 1, galectin 2, galectin 3, GDF-11, GDNF, pleiotrophin, TGF ⁇ , TGF ⁇ , TPO, TS
- ADSCs placenta and its appendages-derived MSCs, synovium-derived MSCs, bone marrow-derived MSCs and umbilical cord-derived MSCs were used as test cells
- IL-1 ⁇ , IL-1 ⁇ , TNF ⁇ , TNF ⁇ , IFN- ⁇ , IFN- ⁇ , FGF15 were used as physiologically active polypeptides.
- the physiologically active polypeptide is referred to as “drug”.
- test cells were subjected to medium replacement with a drug-containing medium (final concentration of 100 ng/mL) and drug-free medium (control), and further subcultured for 3 days (72 hours). After 72 hours of medium change, 600 ⁇ L of RLT Buffer was added for recovery and RNA extraction.
- a probe with the measured value reliable was extracted under the condition of either the control sample or the drug-added sample (one type), and the probe having an expression difference of 15 times or more was extracted as compared to the control sample.
- Tables 2 to 7 show mRNAs whose expression was increased by 15 times or more after treatment with the drug as compared to those before treatment, and their multiplication factor.
- Example 7 In Vivo Tissue healing Effect of Supernatant of ADMPCs Treated with IL-1 ⁇ -Alleviation of Liver Tissue Injury
- Example 2 Collection of adipose tissue from a human subject, isolation and culture of ADMPCs, and IL-1 ⁇ treatment were performed in the same manner as in Example 2.
- streptozotocin was intradermally administered to animals in each group, and the animals were fed with a normal diet, fed with a high-fat diet from week 4 to week 9, and euthanized at week 9.
- Administration of the culture supernatant of ADMPCs treated with IL-1 ⁇ and the carrier was performed once on week 6.
- the obtained liver tissue sections were subjected to Sirius red staining and hematoxylin-eosin (HE) staining.
- the degree of liver tissue injury in mice obtained at week 9 of the study was evaluated according to the NAFLED activity score.
- the evaluation method of NAFLED activity score is shown in Table 1 of Example 2.
- the culture supernatant of ADMPCs treated with IL-1 ⁇ was found to be effective in healing injured tissue, and be useful for tissue protection, repair of tissue/cell injury, suppression of tissue inflammation and promotion of proliferation of cells constituting a tissue. It is considered that these tissue healings enables reconstruction of the tissue form and wound healing. Moreover, because these effects were observed in mice in which liver injury was induced by streptozotocin and high-fat diet, it can be said that IL-1 ⁇ -treated ADMPCs are effective for tissue healing in chronic phase disease.
- Example 8 In Vivo Tissue healing Effect of Supernatant of ADMPCs Treated with IL-1 ⁇ -Alleviation of Lung Tissue Injury
- Example 2 Collection of adipose tissue from a human subject, isolation and culture of ADMPCs, and IL-1 ⁇ treatment were performed in the same manner as in Example 2.
- BLM bleomycin
- a nozzle of a liquid endotracheal administration device (IA-1C, Penn Century) was inserted through the mouth, and after confirming that it was in the trachea, a BLM solution (14 ⁇ g/25 ⁇ L/lung) was injected. Then, the incision was sutured, and 3 mL/kg of an ⁇ 2 adrenergic receptor antagonist (atipamezole hydrochloride 2 mg/kg) was subcutaneously administered.
- IA-1C liquid endotracheal administration device
- IL-1 ⁇ treated ADMPCs and culture supernatant thereof were administered to the test groups in the tail vein while physiological saline was administered to the control group.
- the lungs were removed after being euthanized by exsanguination from the abdominal aorta under isoflurane anesthesia.
- the removed lung was expanded and fixed with 10% neutral buffered formalin at a water column pressure of 20 cm, and then fixed and stored with 10% neutral buffered formalin solution.
- a formalin-fixed lung was cut out as shown in FIG. 9 , a Masson's Trichrome (MT) stained specimen was prepared, and fibrosis was scored by classifying the degree of each lobe of the lung according to the evaluation criteria shown below.
- the evaluation criteria for pulmonary fibrosis are shown in Table 10.
- the weighted averages were calculated from the specimens of the anterior lobe, middle lobe, posterior lobe, and accessory lobe of the left and right lungs, and used as pulmonary fibrosis scores.
- the pulmonary fibrosis scores shown in FIG. 10 were calculated using the following formula.
- Weighted average of individual's pulmonary fibrosis score [Left lung score+(Right lung anterior lobe score+Right lung middle lobe score+Right lung posterior lobe score+Right lung accessory lobe score)/4]/2 [Equation 1]
- ADMPCs treated with IL-1 ⁇ and culture supernatant thereof are effective in healing lung tissue.
- the present invention is useful in the field of pharmaceuticals for tissue healing and in the field of study of diseases which need tissue healing.
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Abstract
Description
- The present invention relates to a pharmaceutical composition for tissue healing, and a method for producing the same. In particular, the present invention relates to a tissue healing agent containing drug-treated adherent cells derived from mesenchymal tissue or culture supernatant thereof, and a method for producing the same.
- Mesenchymal tissue-derived cells have been shown to be useful for tissue healing. Among them, mesenchymal stem cells (MSCs) are being actively studied for their clinical application in regenerative medicine. For example, tissue is considered as a source of stem cells (ASCs) (Non-Patent Document 1), and ASCs are known to have therapeutic effects in various areas (Non-Patent Document 2). In addition, adipose tissue-derived multilineage progenitor cells (ADMPCs) have also been shown to be effective for treatment of liver diseases (Patent Document 1).
- Thus, mesenchymal tissue-derived cells have been shown to be useful in regenerative medicine involving tissue healing. Accordingly, further improvement of their healing ability is desired.
- Patent Document 1: WO 2008/153179
- Non-Patent Document 1: Zuk P A, Zhu M, Ashjian P, et al. Human adipose tissue is a source of multipotent stem cells. MoI Biol Cell 2002; 13: 4279-4295.
- Non-Patent Document 2: Japanese Journal of Transfusion and Cell Therapy, Vol. 59, No. 3: 450-456, 2013
- It is an object to further improve the tissue healing ability of mesenchymal tissue-derived cells.
- As a result of intensive studies to solve the above problems, the present inventors have found that adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS (lipopolysaccharide), or culture supernatant thereof have extremely high tissue healing ability, and completed the present invention.
- That is, the present invention provides the followings:
- (1) A pharmaceutical composition for tissue healing, including adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof, and a pharmaceutically acceptable carrier.
- (2) The pharmaceutical composition according to (1), wherein the physiologically active polypeptide is one or more polypeptides selected from the group consisting of inflammatory cytokine, inflammatory cytokine-inducing polypeptide, growth factor, chemokine, hormone and interferon.
- (3) The pharmaceutical composition according to (1) or (2), wherein the physiologically active polypeptide is one or more polypeptides selected from the group consisting of interferon-β (IFN-β), interferon gamma (IFNγ), interleukin-1 alpha (IL-1α), interleukin-1 beta (IL-1β), interleukin-17A (IL-17A), tumor necrosis factor alpha (TNFα), tumor necrosis factor beta (TNFβ), type I interferon (INF-I), transforming growth factor β (TGFβ), epidermal growth factor (EGF) and fibroblast growth factor (FGF).
- (4) The pharmaceutical composition according to any one of (1) to (3), wherein the adherent cells derived from mesenchymal tissue are mesenchymal tissue-derived stem cells (MSCs), adipose tissue-derived multilineage progenitor cells (ADMPCs), placenta tissue-derived cells, umbilical cord tissue-derived cells, cells derived from tissue of placenta and its appendages, or bone marrow tissue- or synovium tissue-derived cells.
- (5) The pharmaceutical composition according to any one of (1) to (4), wherein the tissue healing is tissue protection, repair of tissue/cell injury, promotion of proliferation of cells constituting a tissue, suppression of tissue inflammation or reconstruction of tissue form.
- (6) The pharmaceutical composition according to any one of (1) to (5), wherein the tissue healing is tissue healing in chronic phase disease.
- (7) A method for producing a pharmaceutical composition for tissue healing, including the steps of:
- (a) treating adherent cells derived from mesenchymal tissue with a physiologically active polypeptide or LPS, and
- (b) mixing the cells treated in step (a) or culture supernatant thereof with a pharmaceutically acceptable carrier.
- (8) The method according (7), wherein the physiologically active polypeptide is one or more polypeptides selected from the group consisting of inflammatory cytokine, inflammatory cytokine-inducing polypeptide, growth factor, chemokine, hormone and interferon.
- (9) The method according to (7) or (8), wherein the physiologically active polypeptide is one or more polypeptides selected from the group consisting of interferon-β (IFN-β), interferon gamma (IFNγ), interleukin-1 alpha (IL-1α), interleukin-1 beta (IL-1β), interleukin-17A (IL-17A), tumor necrosis factor alpha (TNFα), tumor necrosis factor beta (TNFβ), type I interferon (INF-I), transforming growth factor β (TGFβ), epidermal growth factor (EGF) and fibroblast growth factor (FGF).
- (10) The method according to any one of (7) to (9), wherein the adherent cells derived from mesenchymal tissue are mesenchymal tissue-derived stem cells (MSCs), adipose tissue-derived multilineage progenitor cells (ADMPCs), placenta tissue-derived cells, umbilical cord tissue-derived cells, cells derived from tissue of placenta and its appendages, or bone marrow tissue- or synovium tissue-derived cells.
- (11) The method according to any one of (7) to (10), wherein the tissue healing is tissue protection, repair of tissue/cell injury, promotion of proliferation of cells constituting a tissue, suppression of tissue inflammation, wound healing, or reconstruction of tissue form.
- (12) The method according to any one of (7) to (11), wherein the tissue healing is tissue healing in chronic phase disease.
- According to the present invention, a pharmaceutical composition having an extremely high tissue healing ability can be obtained. The pharmaceutical composition of the present invention is useful for tissue healing in chronic phase-tissue injury and the like.
-
FIG. 1 is a graph comparing the produced amount of adiponectin in adipose tissue-derived multilineage progenitor cells (ADMPCs) treated with IL-1β (left) and the produced amount of adiponectin in ADMPCs not treated with IL-1β (right). The vertical axis represents the amount of adiponectin produced. -
FIG. 2 is a graph comparing the produced amount of hepatocyte growth factor (HGF) in ADMPCs treated with IL-1β (left) and the produced amount of HGF in ADMPCs not treated with IL-1β (right). The vertical axis represents the amount of HGF produced. -
FIG. 3 is an image of a Sirius red-stained tissue section showing decrease in intrahepatic fibers by ADMPCs treated with IL-1β in non-alcoholic steatohepatitis (NASH) model mice. The result of a carrier administered group is in the left, the result of an administrated group with ADMPCs not treated with IL-1β is in the middle, and the result of an administered group with ADMPCs treated with IL-1β is in the right. The magnification is 50 times. -
FIG. 4 is an image of a HE-stained tissue section showing reduction in liver tissue injury by ADMPCs treated with IL-1β in non-alcoholic steatohepatitis (NASH) model mice. The result of a carrier administered group is in the left, the result of an administrated group with ADMPCs not treated with IL-1β is in the middle, and the result of an administered group with ADMPCs treated with IL-1β is in the right. The magnification on the top panels is 50 times, and the magnification on the bottom panels is 200 times. -
FIG. 5 is a graph comparing reduction in liver tissue injury by ADMPCs treated with IL-1β and ADMPCs not treated with IL-1β in non-alcoholic steatohepatitis (NASH) model mice using NAFLD Activity Score. The p value is according to Mann-Whitney's U test. -
FIG. 6 is a graph showing improvement in left ventricular ejection fraction by ADMPCs treated with IL-1β and ADMPCs not treated with IL-1β in severe myocardial infarction model animals (pigs). The vertical axis (ΔEF %) represents change (%) in left ventricular ejection fraction before and after administration of cells. The white bar represents a control group to which cells are not administered, the hatched bar represents a group to which ADMPCs not treated with IL-1β are administered, and the black bar represents a group to which ADMPCs treated with IL-1β are administered. -
FIG. 7 is a graph showing investigation results of reduction of liver tissue injury in chronic hepatitis model animals (rats) by ADMPCs treated with IL-1β (ADMPC+), placenta-derived cells treated with IL-1β (AM+), and bone marrow-derived mesenchymal stem cells treated with IL-1β (BM+), and ADMPCs not treated with IL-1β (ADMPC−), and bone marrow-derived mesenchymal stem cells not treated with IL-1β (BM−). The vertical axis shows areas of Sirius Red staining regions (fibrosis region). p-values are as follows: ADMPC− vs. ADMPC+ 0.018, BM− vs. BM+ 0.016, AM− vs. AM+ 0.032, control vs. ADMPC− 0.008, control vs. BM− no significance, control vs. AM− 0.022, control vs. ADMPC+ 0.004, control vs. BM+ 0.056, control vs. AM+ 0.012. -
FIG. 8 is a graph showing investigation results of treatment effect of cardiac tissue in severe myocardial infraction model animals (nude rats) by bone marrow-derived mesenchymal stem cells treated with IL-1β (BM+), ADMPCs treated with IL-1β (ADMPC+), bone marrow-derived mesenchymal stem cells not treated with IL-1β (BM−), and ADMPCs not treated with IL-1β (ADMPC−). The vertical axis shows myocardial thickness after myocardial infraction. p-values are as follows: control vs. BM− 0.022479, control vs. BM+ 0.008113, BM− vs. BM+ 0.045328, control vs. ADMPC− 0.008113, control vs. ADMPC+ 0.019964, ADMPC− vs. ADMPC+ 0.014214. -
FIG. 9 is a drawing showing cutting sections of lungs fixed with formalin in Example 8. -
FIG. 10 is a graph showing investigation results of treatment effects of lung tissue in pulmonary fibrosis model animals (mice) by ADMPCs treated with IL-1β, culture supernatant thereof, and saline. The vertical axis shows pulmonary fibrosis scores. - In one aspect, the present invention provides a pharmaceutical composition for tissue healing, including adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof, and a pharmaceutically acceptable carrier. Here, the physiologically active polypeptide is a polypeptide that acts on a certain physiological regulatory function of the living body. Polypeptide refers to a substance in which two or more amino acid residues are linked to each other via a peptide bond. Various types of LPS are known, and any LPS may be used.
- The physiologically active polypeptide used in the present invention also includes its variants. The variant of the physiologically active polypeptide is one having an activity capable of, when acted on mesenchymal tissue-derived adherent cells, providing mesenchymal tissue-derived adherent cells or culture supernatant thereof that can be used for tissue healing of the present invention.
- The variant refers to a polypeptide in which the amino acid residue constituting the polypeptide has been substituted, deleted or added, with respect to the original peptide. The number of amino acid residues to be substituted, deleted or added is not particularly limited. For example, one to several amino acid residues may be substituted, deleted or added. For example, the variant polypeptide may have an amino acid sequence identity of 800 or more, preferably 90% or more, for example 95% or more, 97% or more, or 990 or more, with respect to the original polypeptide. Furthermore, the variant of the physiologically active polypeptide may be one in which the amino acid residue constituting the polypeptide is modified. The modification may be with any type of label. The modification may be chemical modification such as methylation, halogenation or glycosylation, or labeling such as fluorescence labeling or radioactive labeling. The variant of the physiologically active polypeptide may be one in which some amino acid residues are linked to each other via a bond other than a peptide bond.
- The physiologically active polypeptide used in the present invention may be any polypeptide. Suitable physiologically active polypeptides used in the present invention are preferably cytokine, in particular one or more polypeptides selected from the group consisting of inflammatory cytokine, inflammatory cytokine-inducing polypeptide, growth factor, hormone and interferon. The inflammatory cytokine is a cytokine involved in pathogenesis of inflammation. The inflammatory cytokine-inducing polypeptide is a polypeptide having an effect of increasing the amount of inflammatory cytokine or enhancing the activity thereof. The growth factor is a polypeptide that promotes the growth or differentiation of specific cells in vivo. The chemokine is a fundamental protein that exhibits the action via a G protein coupled receptor and is a group of cytokines. The hormone is a substance that is produced in vivo, transported via body fluids, and affects the activity of specific cells, tissue or organ. The interferon is a group of cytokines produced in response to entry of foreign substances such as virus, pathogen or tumor cells in vivo. Various inflammatory cytokines, inflammatory cytokine-inducing polypeptides, growth factors and interferons are publicly known and any of them may be used.
- The cytokines include, but are not limited to, IL-1α, IL-1β, IL-2 to IL-35, OSM (Oncostatin M), LIF, CNTF, CT-1, TNF-α, TNF-β, BAFF, FasL, RANKL and TRAIL. The inflammatory cytokines include, but are not limited to, IL-1α, IL-1β, IL-6, IL-8, IL-12, IL-18 and TNFα.
- The inflammatory cytokine-inducing polypeptides include, but are not limited to, IL-17A.
- The growth factors include, but are not limited to, activin A, ANGPTL5, BAFF, BD-2, BD-3, BNDF, BMP-1 to 7, DKK1, EGF, EG-VEGF, FGF-1 to 21, G-CSF, GM-CSF, HGF, IGF-1, IGF-2, platelet-derived growth factor (PDGF)-AA, PDGF-AB, PDGF-BB, R-spondin-1 to 3, SCF, galectin-1 to 3, GDF-11, GDNF, pleiotrophin, TGF-α, TGF-β, TPO (thrombopoietin), TSLP, vascular endothelial growth factor (VEGF) and ciliary neurotrophic factor (CNTF).
- The chemokines include, but are not limited to, CCL1 to CCL28 and CXCL1 to CXCL10.
- The hormones include, but are not limited to, Calcitonin, Parathormone, Glucagon, Erythropoietin, Leptin, ANP, BNP, CNP, Oxytocin, Vasopressin, TRH (thyrotropin releasing hormone), TSH (thyroid stimulating hormone), CRH (corticotropin releasing hormone), ACTH (adrenocorticotropin hormone), GRH (gonadotropin releasing hormone), FSH (follicle stimulating hormone), LH (luteinizing hormone), SOM (somatostatin), GRH (growth hormone releasing hormone), GH (growth hormone), PRH (prolactin releasing hormone), PIH (prolactin inhibiting hormone) and Prolactin.
- The interferons include, but are not limited to, IFN-α, IFN-β, IFN-γ and IFN-I.
- Suitable physiologically active peptides used in the present invention are inflammatory cytokine, inflammatory cytokine-inducing polypeptide, growth factor and interferon. Among them, preferable examples include, but are not limited to, IFN-β, IFN-γ, IL-1α, IL-1β, IL-17A, TNFα, TNF-β, INF-I, TGFβ, EGF and FGF.
- The tissue healing refers to restoring a tissue to a normal state or bringing a tissue closer into a normal state, including tissue protection, repair of tissue/cell injury, promotion of proliferation of cells constituting a tissue, suppression of tissue inflammation, wound healing, and reconstruction of the tissue form. Because the cells or culture supernatant thereof in the pharmaceutical composition of the present invention are useful for tissue protection, promotion of proliferation of cells constituting a tissue, etc., the pharmaceutical composition of the present invention is preferably used for tissue healing in chronic phase disease.
- Tissues to be healed by the pharmaceutical composition of the present invention are any tissue of animal and are not particularly limited. Examples of the tissues include, but are not limited to, liver, pancreas, kidney, muscle, bone, cartilage, bone marrow, stomach, intestine, blood, nerve, skin, mucous membrane, heart and hair. Suitable tissues to be healed by the pharmaceutical composition of the present invention are liver, nerve, skin, mucous membrane and heart. Therefore, the pharmaceutical composition of the present invention is preferably used for treatment of, for example, liver cirrhosis, hepatitis and NASH (nonalcoholic steatohepatitis), and is also effective for chronic phase disease.
- The cells or culture supernatant thereof that are an active ingredient of the pharmaceutical composition of the present invention are adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof.
- The pharmaceutical composition of the present invention may be administered to a subject of the same animal species as, or different animal species from which the active ingredient cells or culture supernatant thereof are derived. For example, the pharmaceutical composition of the present invention including adherent cells derived from human-derived mesenchymal tissue treated with an inflammatory cytokine-inducing agent or culture supernatant thereof may be administered to a human subject. The cells or culture supernatant thereof in the pharmaceutical composition of the present invention may be from the same human subject as the human subject to be administered, or may be from a different human subject from the human subject to be administered.
- Any mesenchymal tissue-derived adherent cells may be used in the present invention. The mesenchymal tissue-derived adherent cells may be commercially available ones, for example, distributed ones from organizations such as American Type Culture Collection (ATCC) (US) and NITE (Japan). Alternatively, mesenchymal tissue-derived adherent cells may be obtained from mesenchymal tissue. Means and methods for preparing mesenchymal tissue-derived adherent cells from mesenchymal tissue are publicly known.
- Examples of suitable mesenchymal tissue-derived adherent cells include, but are not limited to, mesenchymal tissue-derived stem cells (MSCs) such as adipose tissue-derived stem cells (ASCs), adipose tissue-derived multilineage progenitor cells (ADMPCs), Muse cells, cells derived from bone marrow tissue, placenta tissue, umbilical cord tissue, amniotic tissue, cartilage tissue, periosteum tissue, synovium tissue, skeletal muscle tissue, and tissue of placenta and its appendages, stem cells, stromal cells, and menstrual blood cells.
- When the cells are obtained from mesenchymal tissue, they may be isolated from any mesenchymal tissue. Examples of mesenchymal tissue include, but are not limited to, adipose tissue, bone marrow tissue, placenta tissue, umbilical cord tissue, amniotic tissue, cartilage tissue, periosteum tissue, synovium tissue, skeletal muscle tissue, placenta tissue and menstrual blood. Preferable mesenchymal tissues include adipose tissue, bone marrow tissue, synovium tissue, placenta tissue, umbilical cord tissue, and tissue of placenta and its appendages. In particular, adipose tissue is preferable because it is contained in a large amount in the body and many cells can be extracted.
- Adherent cells can be obtained by extracting mesenchymal tissue from the body, placing and culturing the tissue in a culture vessel, and selectively acquiring cells adhering to the vessel. Mesenchymal tissue can be extracted using publicly known means and methods such as excision and aspiration. The extracted mesenchymal tissue may be cultured as it is, or if necessary, the extracted mesenchymal tissue may be minced or broken, followed by removing of red blood cells to culture the obtained cell population. These treating methods and means, and cell culturing means and methods are publicly known, and can be appropriately selected. Mesenchymal tissue-derived adherent cells may be obtained, for example, by treating the cells attached to the culture vessel with an enzyme such as trypsin.
- Treatment of mesenchymal tissue-derived adherent cells with a physiologically active polypeptide or LPS may be carried out by contacting the cells with cytokine in a publicly known manner. Typically, this treatment may be carried out by culturing mesenchymal tissue-derived adherent cells for a certain period of time in a medium containing an appropriate concentration of physiologically active polypeptide or LPS. Usually, mesenchymal tissue-derived adherent cells are cultured in several nanograms/ml to several hundred nanograms/ml of inflammatory cytokine or a medium to which inflammatory cytokine has been added. The medium for use in culture may be a publicly known one. The culturing time and culturing temperature may also be appropriately selected. If necessary, mesenchymal tissue-derived adherent cells may be cultured to increase the number of cells, before treatment with a physiologically active polypeptide or LPS. A desired subpopulation may be obtained from a population of mesenchymal tissue-derived adherent cells, and if necessary, the subpopulation may be cultured to increase the number of cells, before treatment with a physiologically active polypeptide or LPS.
- The number of types of physiologically active polypeptide or LPS for use in treatment of mesenchymal tissue-derived adherent cells may be one or two or more.
- Mesenchymal tissue-derived adherent cells treated with a physiologically active polypeptide or LPS increase expression and production of one or more factors that contribute to tissue repair (such as polypeptide, growth factor and/or enzyme involved in tissue healing), or become to express and produce the same. Such factors include, but are not limited to, adiponectin, HGF, CSF2 (GM-CSF), CSF3 (G-CSF), LIF, MMP family factors, FGF family factors, ADAM family factors, angiopoietin-like protein family factors, pleiotrophin, R-spondin family factors and VEGF family factors. CSF2 or CSF3 contributes not only to activation of hematopoietic stem cells but also to stem cell proliferation and/or angiogenesis in many tissues or organs including brain, heart, lung, and liver, thereby contributing to tissue repair. Accordingly, cells that express and produce these factors at higher level are preferred. The increase in expression or production of the above factor may be, for example, 10 times or more, preferably 30 times or more, more preferably 50 times or more, still more preferably 100 times or more, compared to that before treatment.
- Culture supernatant of mesenchymal tissue-derived adhesive cells treated with a physiologically active polypeptide or LPS may be obtained by methods described below.
- (1) culturing mesenchymal tissue-derived adherent cells in a medium containing a physiologically active polypeptide or LPS, and obtaining culture supernatant thereof.
- (2) culturing mesenchymal tissue-derived adherent cells in a medium containing a physiologically active polypeptide or LPS, transferring the cultured cells to another medium, culturing them, and obtaining culture supernatant thereof.
- Culture in a medium containing a physiologically active polypeptide or LPS may be performed in a similar manner to the treatment with a physiologically active polypeptide or LPS as described above. Conditions of cell culture such as medium components, culture time, culture temperature can be appropriately selected and changed according to cell type, cell number needed, use of cells, and so on of cells. Culture supernatant may be concentrated using a known method for concentration such as centrifugation, filtration by a filter, precipitation with ammonium sulfate, freeze-drying, and so on.
- The pharmaceutical composition of the present invention can be produced by mixing mesenchymal tissue-derived adherent cells treated with a physiologically active polypeptide or LPS, or culture supernatant thereof as described above with a pharmaceutically acceptable carrier. A variety of pharmaceutically acceptable carriers are publicly known and may be appropriately selected for use. For example, when the pharmaceutical composition of the present invention is used as an injection, the cells may be suspended in a carrier such as purified water, saline or phosphate buffered saline. The pharmaceutical composition of the present invention comprising culture supernatant is preferable in that there is no matter such as occlusion of blood vessels and needles with cells when administered.
- The dosage form of the pharmaceutical composition of the present invention is not particularly limited, but may be a solution, semisolid or solid. The administration method of the pharmaceutical composition of the present invention is also not limited, but may include local injection, intravenous injection or infusion, application to an affected area, administration to an affected area via a catheter, or direct transplantation to tissues such as liver by a surgical procedure. The pharmaceutical composition of the present invention may be transplanted in the form of cell sheet, cell mass, layered cell sheet, etc.
- The administration route and dose of the pharmaceutical composition of the present invention may be appropriately determined in consideration of the type and site of the tissue to be healed, the degree of disease, the condition of the subject and the like.
- The pharmaceutical composition of the present invention may contain cells other than adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS. The pharmaceutical composition of the present invention may contain components other than the culture supernatant of mesenchymal tissue-derived adhesive cells treated with a physiologically active polypeptide or LPS.
- In a further aspect, the present invention provides use of adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof in producing a medicament for tissue healing.
- In a further aspect, the present invention provides use of adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof for tissue healing.
- In a further aspect, the present invention provides a method for tissue healing in a subject in need of tissue healing, including administering to the subject adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide or LPS, or culture supernatant thereof.
- In yet another aspect, the present invention provides a method for producing a pharmaceutical composition for tissue healing, including the steps of:
- (a) treating adherent cells derived from mesenchymal tissue with a physiologically active polypeptide or LPS, and
- (b) mixing the cells treated in step (a) or culture supernatant thereof with a pharmaceutically acceptable carrier.
- In yet another aspect, the present invention provides a method for producing cells for tissue healing, including treating adherent cells derived from mesenchymal tissue with a physiologically active polypeptide or LPS. In yet another aspect, the present invention provides a method for producing cell culture supernatant for tissue healing, which comprises treating mesenchymal tissue-derived adhesive cells with a physiologically active polypeptide or LPS, and obtaining culture supernatant thereof.
- Hereinafter, more detailed and specific description is made of the present invention with reference to Examples, but the Examples are not intended to limit the present invention.
- Example 1. Effect of Treating ADMPCs with IL-Iβ
- (1) Method of Experiment
- (i) Collection of Adipose Tissue from Human Subject
- From six women from which informed consent was obtained, extra adipose tissue to be discarded was received during liposuction surgery. The protocol conformed to the Kobe University Graduate School of Medicine Review Boards for Human Research.
- (ii) Isolation and Culture of ADMPCs
- The adipose tissue was minced and then digested in Hanks' buffered saline solution (HESS) containing 0.008% Liberase (Roche Lifescience) with shaking in a water bath at 37° C. for 1 hour. The digested product was filtered through Cell Strainer (BD Bioscience), followed by centrifuging at 800×g for 10 minutes. The lymphocyte separation solution (d=1.077) (Nacalai tesque) was used to remove red blood cells by specific gravity method. The obtained cell population containing ADMPCs were seeded in DMEM containing 10% fetal bovine serum (Hyclone) to allow for attachment of the cells, followed by washing and treatment with EDTA to yield ADMPCs. Then, the ADMPCs in a medium (60% DMEM-low glucose, 40% MCDB201, 10 μg/mL EGF, 1 nM dexamethasone, 100 μM ascorbic acid and 5% FBS) were seeded on a human fibronectin-coated dish and subcultured 3 to 8 times to yield cultured ADMPCs.
- (iii) IL-1β Treatment
- IL-1β was added to a medium (60% DMEM-low glucose, 40% MCDB 201, 10 μg/mL EGF, 1 nM dexamethasone, 100 μM ascorbic acid and 5% FBS) to a concentration of 10 ng/ml. The cultured ADMPCs obtained in (ii) above were cultured in the IL-1β-containing medium for 72 hours to measure adiponectin and hepatocyte growth factor (HGF) produced in the medium. The measurement of adiponectin was performed using the ELISA kit of abcam (Catalog No. ab99968). The measurement of HGF was performed using the ELISA kit of R & D System (Catalog No. DHG00). For a control, ADMPCs were cultured in the above medium except that IL-β was not added.
- (2) Results of Experiment
- The measurement results of amount of adiponectin produced are shown in
FIG. 1 . Production of adiponectin from ADMPCs not treated with IL-1β was not found, whereas it was confirmed that adiponectin was produced from ADMPCs treated with IL-1β. - The measurement results of amount of HGF produced are shown in
FIG. 2 . The amount of HGF produced from ADMPCs treated with IL-1β was increased by about 1.7 times as compared to the amount of HGF produced from ADMPCs not treated with IL-1β. - Example 2. In Vivo Tissue Healing Effect of ADMPCs Treated with IL-1β-Alleviation of Liver Tissue Injury
- (1) Method of Experiment
- Collection of adipose tissue from a human subject, isolation and culture of ADMPCs, and IL-1β treatment were performed in the same manner as in Example 1, except that the concentration of IL-1β in the medium was 5 ng/ml.
- ADMPCs treated with IL-1β were suspended in a carrier to a concentration of 1.2×105 cells/ml. These cells were administered to NASH model mice (STAM (registered trademark) mice) to examine healing of the liver tissue. The animals were divided into three groups: a group to which ADMPCs treated with IL-1β were administered (n=9), a group to which ADMPCs not treated with IL-1β were administered (n=9), and a group to which a carrier was administered (n=10). At the beginning of the study, streptozotocin was administered to the animals in each group, and the animals were fed with a normal diet, fed with a high-fat diet from
week 4 to week 9, and euthanized at week 9. Administration of ADMPCs (3×105 cells/kg) and carrier was performed once atweek 6. The liver tissue sections obtained were subjected to Sirius red staining and hematoxylin-eosin (HE) staining. - (2) Results of Experiment
- (i) Sirius Red Staining of Liver Tissue Sections
- The results of Sirius red staining of liver tissue sections from mice obtained at week 9 of the study are shown in
FIG. 3 . In the livers from mice to which ADMPCs treated with IL-1β was administered, it was confirmed that deposition of intrahepatic fibers stained with Sirius red was reduced, compared to the livers from carrier administered mice and mice to which ADMPCs not treated with IL-1β was administered. - (ii) HE Staining of Liver Tissue Sections
- The results of HE staining of liver tissue sections from mice obtained at week 9 of the study are shown in
FIG. 4 . In the livers from mice to which ADMPCs treated with IL-1β was administered, it was confirmed that injury to liver tissue represented by vacuolation was reduced, compared to the livers from carrier administered mice and mice to which ADMPCs not treated with IL-1β was administered. - (iii) Evaluation of liver tissue healing effect by NAFLED activity score (E. M. Brunt et al. Hepatology. 2011 March; 53(3): 810-820)
- The degree of liver tissue injury in mice obtained at week 9 of the study was evaluated according to the NAFLED activity score. The evaluation method of NAFLED activity score is shown in Table 1.
-
TABLE 1 EVALUATION METHOD OF NAFLD ACTIVITY SCORE ITEM DEFINITION SCORE FATTY CHANGE FATTY CHANGE AT LOW TO MODERATE MAGNIFICATION <5% 0 5-33% 1 33-66% 2 >66% 3 INFLAMMATION OF EVALUATION OF INFLAMMATION LIVER PARENCHYMA FOCI NONE 0 LESS THAN 2 SITES AT 200 1 TIMES ENLARGEMENT 2 TO 4 SITES AT 200 TIMES 2 ENLARGEMENT MORE THAN 5 SITES AT 200 3 TIMES ENLARGEMENT LIVER CELL INJURY NONE 0 (BALLOONING) 2 TO 3 BALLOONING CELLS 1 4 OR MORE BALLOONING CELLS 2 - The results are shown in
FIG. 5 . The NAFLD activity score was significantly lower in the livers from mice to which ADMPCs treated with IL-1β was administered, compared to the livers from carrier administered mice and mice to which ADMPCs not treated with IL-1β was administered. It was confirmed that injury to liver tissue represented by vacuolation, inflammation and fatty change was greatly reduced. - From these results, ADMPCs treated with IL-1β are found to be effective in healing injured tissue, and be useful for tissue protection, repair of tissue/cell injury, suppression of tissue inflammation and promotion of proliferation of cells constituting a tissue. It is considered that these tissue healings enables reconstruction of the tissue form and wound healing. Moreover, because these effects were observed in mice in which liver injury was induced by streptozotocin and high-fat diet, it can be said that IL-1β-treated ADMPCs are effective for tissue healing in chronic phase disease.
- Example 3. In Vivo Tissue Healing Effect of ADMPCs Treated with IL-1β-Improvement of Cardiac Function
- (1) Method of Experiment
- A severe myocardial infarction model was created using 8 weeks old pigs by two-stage balooning/reperfusion method. In detail, a 6F guide catheter was transcutaneously placed through the femoral artery on the opening of the left coronary artery, a guide wire was inserted through the catheter into the first diagonal artery (#9 in the AHA classification), and preconditioning was performed by conducting ballooning (obstruction reopening) with the aid of the guide. One week later, a guidewire was inserted into the left anterior descending coronary artery (#6 to #8 in the AHA classification), and ballooning (obstruction reopening) was performed at the left anterior descending coronary artery immediately below the bifurcation of the left circumflex coronary artery (#6 in the AHA classification) to produce a myocardial ischemic region. Four weeks after that (five weeks after the first obstruction reopening), individuals with a cardiac ejection fraction of 40% or less in cardiac ultrasonography were subjected to the study as a severe heart failure model.
- Four weeks after the second balooning/reperfusion, the animals were divided into following groups: a control group (cells were not administrated), a group to which non-activated cells (ADMPCs) were administered, and a group to which IL-1β activated cells (72 hours cultured) IL-1β-activated ADMPCs) were administered. To cell administered groups, cells at a concentration of 3×105 cells/kg body weight were administered through a catheter via the coronary artery in the same manner. ADMPCs and IL-1β-activated ADMPCs were prepared in the same manner as in Example 1. Immediately before administration, cardiac MRI was performed 3 months after administration (Signa EXCITE XI TwinSpeed 1.5T Ver. 11.1, GE Healthcare), using Cardiac Vx (GE Healthcare) as analysis software, to measure left ventricular end-diastolic and end-systolic volumes.
- The following formula:
-
Left ventricular ejection fraction=100×(left ventricular end-diastolic volume−left ventricular end-systolic volume)/(left ventricular end-diastolic volume) - was used to calculate left ventricular ejection fraction (% EF). The difference between the
value 3 months after administration and the value immediately before administration is represented as ΔEF (%) (FIG. 6 ). - (2) Results of Experiment
- As shown in
FIG. 6 , the left ventricular ejection fraction was decreased in the control group, whereas the left ventricular ejection fraction was improved in the two groups to which cells were administered, in particular, when IL-1β-activated cells were administered, the left ventricular ejection fraction was markedly improved. - These results indicate that IL-1β-treated ADMPCs heal cardiac tissue injured by severe myocardial infarction and markedly improve the cardiac function.
- Example 4. In Vivo Tissue Healing Effects of ADMPCs Treated with IL-1β, Bone Marrow-Derived Mesenchymal Stem Cells Treated with IL-1β, and Placenta-Derived Cells Treated with IL-1β-Reduction of Liver Tissue Fibrosis
- (1) Method of Experiment
- (i) Collection of Adipose Tissue from a Human Subject
- Extra adipose tissue to be discarded was provided during liposuction surgery from six women from whom informed consent was obtained. The protocol conformed to the Kobe University Graduate School of Medicine Review Boards for Human Research. Bone marrow-derived mesenchymal stem cells and placenta-derived cells were purchased from Lonza.
- (ii) Isolation and Culture of ADMPCs
- The adipose tissue was minced and then digested in Hanks' buffered saline solution (HBSS) containing 0.008% Liberase (Roche Lifescience) in a water bath at 37° C. for 1 hour with shaking. The digested product was filtered through Cell Strainer (BD Bioscience), followed by centrifuging at 800×g for 10 minutes. The lymphocyte separation solution (d=1.077) (Nacalai tesque) was used to remove red blood cells by specific gravity method. The obtained cell population containing ADMPCs were seeded in DMEM containing 10% fetal bovine serum (Hyclone) to allow for attachment of the cells, followed by washing and treatment with EDTA to yield ADMPCs. Then, the ADMPCs in a medium (60% DMEM-low glucose, 40% MCDB201, 10 μg/mL EGF, 1 nM dexamethasone, 100 μM ascorbic acid and 5% FBS) were seeded on a human fibronectin-coated dish and subcultured 3 to 8 times to yield cultured ADMPCs.
- Bone marrow-derived mesenchymal stem cells and placenta-derived cells were seeded to human fibronectin coated dishes with a medium (60% DMEM-low glucose, 40% MCDB201, 10 μg/mL EGF, 1 nM dexamethasone, 100 μM ascorbic acid, and 5% FBS), and subcultured three times to subjected to experiments.
- (iii) IL-1β Treatment
- IL-1β was added to a medium (60% DMEM-low glucose, 40% MCDB 201, 10 μg/mL EGF, 1 nM dexamethasone, 100 μM ascorbic acid and 5% FBS) to a concentration of 5 ng/ml. The cultured ADMPCs, bone marrow-derived mesenchymal stem cells, and placenta-derived cells obtained in
section 2 above were cultured in the IL-1β-containing medium as described above for 72 hours. In the control system, ADMPCs, bone marrow-derived mesenchymal stem cells, and placenta-derived cells were cultured in the above medium without addition of IL-1β. - ADMPCs treated with IL-1β, bone marrow-derived mesenchymal stem cells treated with IL-1β, and placenta-derived cells treated with IL-1β were suspended in a carrier to a concentration of 1.2×105 cells/ml. These cells were administered to chronic hepatitis model animals made by a hepatitis-inducing agent administration to examine healing of the liver tissue. The animals were divided into 7 groups: a group to which ADMPCs treated with IL-1β were administered (n=6), a group to which ADMPCs not treated with IL-1β were administered (n=5), a group to which bone marrow-derived mesenchymal stem cells treated with IL-1β were administered (n=5), a group to which bone marrow-derived mesenchymal stem cells not treated with IL-1β were administered (n=4), a group to which placenta-derived cells treated with IL-1β were administered (n=5), a group to which placenta-derived cells not treated with IL-1β were administered (n=5), and a group to which a carrier was administered (n=5).
- Chronic hepatitis model animals were made by administration of a hepatitis-inducing agent. Chronic hepatitis model rats were obtained by intraperitoneal injection of 300 μL/kg (each time) carbon tetrachloride twice a week for four weeks. ADMPCs, bone marrow-derived mesenchymal stem cells or placenta-derived cells (3×105/kg) with/without IL-1β treatment, and a carrier were administered to tail vein of these rats. After one week from cell administration (after five week from the beginning of test), animals were euthanized under deep anesthesia, livers were removed, and fixed them with neutral buffered formalin. These liver samples were paraffin embedded, obtained thin slices, and the obtained liver tissue slices were subjected to Sirius Red staining.
- (2) Results of Experiments
- (i) Sirius Red Staining of Liver Tissue Slices
- Results of Sirius Red staining of rat liver tissue obtained on 5th week from the beginning of the test are shown in
FIG. 7 . Reduction of fiber deposition in the livers stained by Sirius Red was confirmed in the livers of rats to which ADMPCs treated with IL-1β, bone marrow-derived mesenchymal stem cells treated with IL-1β, or placenta-derived cells treated with IL-1β were administered, compared with the livers of rats to which ADMPCs not treated with IL-1β, bone marrow-derived mesenchymal stem cells not treated with IL-1β, or placenta-derived cells not treated with IL-1β were administered. - From these results, it was found that ADMPCs treated with IL-1β, bone marrow-derived mesenchymal stem cells treated with IL-1β, or placenta-derived cells treated with IL-1β are effective in healing injured tissue. It is considered that these tissue healing enables reconstruction of the tissue form and wound healing. Moreover, because these effects were found in chronic hepatitis model animals made by administration of a hepatitis-inducing agent administration, it can be said that ADMPCs treated with IL-1β, bone marrow-derived mesenchymal stem cells treated with IL-1β, or placenta-derived cells treated with IL-1β are effective in tissue healing in chronic phase disease.
- Example 5. In Vivo Tissue Healing Effect of ADMPCs Treated with IL-1β or Bone-Marrow-Derived Mesenchymal Stem Cells Treated with IL-1β-Improvement of Cardiac Tissue
- (1) Method of Experiment
- Chest of an 8-week-old nude rat deeply anesthetized with a general anesthetic was opened to expose the heart, and the descending branch of the coronary artery was completely ligated to create an acute myocardial infraction model. Two weeks later, two IL-1β-treated ADMPC sheets or two IL-1β-treated bone-marrow-derived mesenchymal stem cell sheets were transplanted to the left ventricular wall of the myocardial infraction model rat under general anesthesia with left intercostal thoracotomy. Four weeks after transplantation, the animals were sacrificed to remove the hearts, and the hearts were fixed with 10% neutral buffered formalin. These heart samples were cut into round slices, embedded in paraffin, the sliced sections were obtained, and after HE staining, the thickness of the anterior wall of the left wall, which was the site of myocardial infraction, was measured.
- (i) Preparation of Cell Sheets
- ADPMCs or bone-marrow-derived mesenchymal stem cells were cultured at 37° C. for 72 hours in a medium containing IL-1β at a concentration of 5 ng/mL in temperature-sensitive culture dishes. Cells were peeled off by incubating 20° C. or lower for 30 minutes to obtain cell sheets. The obtained sheets were used in transplantation experiments described below.
- (ii) Transplantation of Sheets to Myocardial Infraction Model Rats
- A myocardial infarction model rat was created by ligating the coronary arteries of nude rats. Two weeks later, the chest was opened again, and two cell sheets each, containing ADMPCs or bone marrow-derived mesenchymal stem cells cultured with or without IL-1β, were transplanted into the injured area. In the control group, sham surgery was performed with only thoracotomy.
- (iii) Analysis of Cardiac Tissue to which Sheets were Transplanted
- Rats were euthanized 4 weeks after transplantation and the hearts were removed. The removed hearts were fixed with 4% paraformaldehyde solution which was then replaced with 70% ethanol. The fixed hearts were cut into a few millimeters wide and hardened with paraffin to make blocks. The obtained paraffin blocks were sliced into 3 μm using a microtome, attached to slide glasses, and dried. The obtained thin sections were stained with hematoxylin eosin as follows.
- (iv) Hematoxylin Eosin Staining
- The thin sections were deparaffinized and washed with water. The sections were stained with hematoxylin solution for 10 minutes and washed with warm water for 3 minutes. After washing with water, the sections were stained with eosin for 5 minutes. The sections were dehydrated with alcohol. After being transparentized with xylene, the sections were sealed and observed under a microscope. The wall thickness of the anterior wall of the left ventricle, which is the infarcted area, was evaluated.
- (2) Results of Experiment
- As shown in
FIG. 6 , in the group to which the sheets of IL-1β-treated ADMPCs were transplanted, or the group to which the sheets of IL-1β-treated bone marrow-derived mesenchymal stem cell were transplanted, wall thickness of the anterior wall of the left ventricle was improved, compared with the group to which the sheets of IL-1β-untreated ADMPCs were transplanted, or the group to which the sheets of IL-1β-untreated bone marrow-derived mesenchymal stem cell were transplanted. - These results indicate that IL-1β-treated ADMPCs or bone marrow-derived mesenchymal stem cells heal cardiac tissue damaged by severe myocardial infarction and significantly improve cardiac function.
- Example 6. Effect of Treating Adhesive Cells Derived from Various Mesenchymal Tissues with Various Physiologically Active Polypeptides
- (1) Method of Experiment
- As test cells, umbilical cord-derived mesenchymal stem cells (umbilical cord-derived MSCs), adipose tissue-derived stem cells (ADSCs), knee cartilage synovium-derived mesenchymal stem cells (synovium-derived MSCs), adipose tissue-derived multilineage progenitor cells (ADMPCs), placenta and its appendages-derived mesenchymal stem cells (placenta and its appendages-derived MSCs) and bone marrow-derived mesenchymal stem cells (bone marrow-derived MSCs) were used. Various cytokines, chemokines, growth factors and hormones were used as physiologically active polypeptides.
- When ADMPCs were used as test cells, cytokines (IL-1α, IL-1β, IL3 to IL35, oncostatin M, LIF, CNTF, CT-1, TNFα, TNFβ, BAFF, FasL, RANKL, TRAIL, INF-α, IFN-β, IFN-γ), chemokines (CCL1 to CCL28, CXCL1 to CXCL10), growth factors (AvinA, ANGPLT5, BD-2, BD-3, BDNF, BMP-1 to BMP-7, DKK1, EGF, EG-VEGF, FGF-1 to FGF-21, G-CSF, HGF, IGF-1, IGF-2, PDGF-AA, PDGF-BB, R-spondin-1, R-spondin-2, R-spondin-3, SCF,
galectin 1,galectin 2,galectin 3, GDF-11, GDNF, pleiotrophin, TGFα, TGFβ, TPO, TSLP, VEGF), and hormones (calcitonin, parathormone, glucagon, erythropoietin, leptin, ANP, BNP, CNP, oxytocin, vasopressin, TGH, TSH, CRH, ACTH, GRH, FSH, LH, SOM, GRH, GH, PRH, prolactin) were used as physiologically active polypeptides. When ADSCs, placenta and its appendages-derived MSCs, synovium-derived MSCs, bone marrow-derived MSCs and umbilical cord-derived MSCs were used as test cells, IL-1α, IL-1β, TNFα, TNFβ, IFN-β, IFN-γ, FGF15 were used as physiologically active polypeptides. Hereinafter, the physiologically active polypeptide is referred to as “drug”. - The test cells were subjected to medium replacement with a drug-containing medium (final concentration of 100 ng/mL) and drug-free medium (control), and further subcultured for 3 days (72 hours). After 72 hours of medium change, 600 μL of RLT Buffer was added for recovery and RNA extraction.
- As to RLT Buffer samples, total RNA was extracted using RNeasy Mini Kit/QIAGEN, and the total RNA was prepared in a concentration of 100 ng/μL. Then, labeled cRNA was synthesized from 150 ng of the total RNA per array. For the synthesized labeled cRNA, the concentration, yield and Cy3 uptake rate were calculated and the synthetic size (200 to 2000 nt were amplified) was measured. Six hundred ng of the labeled cRNA was fragmented at 60° C. and hybridized at 65° C. for 17 hours, and the array was washed and scanned.
- A probe with the measured value reliable was extracted under the condition of either the control sample or the drug-added sample (one type), and the probe having an expression difference of 15 times or more was extracted as compared to the control sample.
- (2) Results of Experiment
- Tables 2 to 7 show mRNAs whose expression was increased by 15 times or more after treatment with the drug as compared to those before treatment, and their multiplication factor.
-
TABLE 2 UMBILICAL CORD-DERIVED MSCs INCREASED MULTIPLICATION DRUG GENE FACTOR TNFα CSF2 51.92866 IFNγ SPARCL1 24.166359 IL1α CSF2 65.41428 CCL3 44.713257 MMP3 17.676903 IL1β CSF2 45.73727 FGF15 MMP7 20.78586 -
TABLE 3 ADSCs INCREASED MULTIPLICATION DRUG GENE FACTOR TNF-α CSF3 457.4336 CSF2 210.81802 MMP9 36.619884 LIF 28.586313 FGF13 26.435118 BMP2 24.754152 MMP3 16.642172 TNF-β MMP9 50.442356 CSF3 23.138222 FGF5 15.041612 IFNβ CSF3 81.64009 CSF2 81.4202 BTC 37.966434 FGF20 33.667175 IFNγ FGF20 17.39512 MMP25 15.073852 IL-1α CSF2 3650.884 CSF3 3004.3464 MMP3 153.17429 MMP12 48.928066 LIF 44.622696 NTN1 19.101036 HBEGF 17.43808 MMP1 16.788137 MMP8 15.74857 IL-1β CSF3 3658.2717 CSF2 2945.6265 MMP3 163.10434 MMP12 77.35472 LIF 44.191887 MMP8 20.121588 HBEGF 17.731503 MMP1 17.499699 ADAMTS8 16.701633 FGF13 15.317384 FGF15 CSF3 1992.8231 CSF2 177.31819 MMP3 87.44734 MMP12 18.993986 -
TABLE 4 SYNOVIUM-DERIVED MSCs DRUG INCREASED MULTIPLICATION TNFα CSF3 481.9497 MMP3 184.5146 MMP1 118.73493 CSF2 93.68834 RSPO3 78.78901 RSPO3 54.598293 MMP12 37.193733 ANGPTL1 29.710234 LIF 19.802446 TNF-β CSF3 133.98564 MMP3 79.96354 MMP1 57.18347 RSPO3 29.265568 RSPO3 22.514166 IFNβ ANGPTL1 30.57255 FGF20 17.808767 IFN-γ MMP25 18.338886 IL-1α CSF3 10575.728 MMP3 1345.4216 MMP1 244.72272 MMP12 163.36778 CSF2 142.88773 MMP13 28.037321 MMP10 21.2812 RSPO3 18.53049 IL1β CSF3 8791.783 MMP3 935.04913 MMP12 181.83107 CSF2 129.32849 MMP1 107.597824 ADAMTS16 33.420284 GDF3 16.958546 MMP13 16.034931 IGF1 15.101902 FGF15 CSF3 1407.7273 MMP3 490.81107 MMP12 162.75064 MMP1 58.44772 IGF1 58.422787 BMP6 20.44636 -
TABLE 5-1 ADMPCs INCREASED MULTIPLICATION DRUG GENE FACTOR BMP-3 GCG 17.480957 NRTN 28.843102 BMP-4 REG4 75.89187 BMP-6 HDGFL1 65.01833 CCL-3 EGF 15.73962 CCL-5 MMP26 29.093975 MMP13 17.447323 CCL-8 BMP7 17.2787 CCL-9 BMP10 28.345194 CCL-15 BMP7 17.304893 CCL-19 FGF22 47.299706 CCL-20 EGF 34.020695 CCL-21 BMP10 30.952303 CCL-23 ADIPOQ 18.862783 CCL-26 FGF10 15.473124 CCL-28 NMU 22.596947 CNTF ADAMTS20 44.9686 EGF 20.999825 CT-1 FGF6 16.76011 CXCL5 ADAM22 15.880237 CXCL10 ADIPOQ 23.21833 LTBP3 15.590775 FGF15 CSF3 78.26141 MMP3 21.577183 GALECTIN 1IGF1 17.737694 IFNβ PTN 34.09604 ANGPTL1 23.657429 IFNγ ADAMTS5 18.498682 GLDN 93.92384 PGF 33.75676 FGF21 16.46351 IGF-2 IGFL4 18.903763 IL-1α CSF3 1266.8649 CSF2 241.81323 MMP8 90.97638 MMP3 82.76877 MMP12 62.105858 FGF13 61.590416 MMP1 30.74703 MMP13 21.096134 -
TABLE 5-2 INCREASED MULTIPLICATION DRUG GENE FACTOR IL-1β CSF3 1414.8679 CSF2 215.49258 MMP8 82.693 MMP3 81.932846 MMP12 80.88991 FGF13 53.733124 MMP1 29.282549 MMP13 19.679766 IL-7 BMP3 15.619323 IL-8 EGF 166.93967 ADAMTS20 27.746012 MMP7 15.016879 IL-11 OOSP2 27.152683 IL-17 CSF3 47.33713 IL-24 FGF20 16.994074 IL-26 MMP26 25.349789 IL-31 ADAM21 16.247 IL-35 NPPC 27.392384 EPO 21.361319 TNFα CSF3 760.7263 FGF13 519.2593 MMP8 322.53482 CSF2 84.63178 MMP3 42.06483 MMP1 41.600243 MMP13 33.378723 MMP10 33.15327 FGL2 30.280602 ADAM8 28.907818 MMP9 24.30117 RSPO3 22.690266 TNFβ FGF13 52.990948 CSF2 27.081493 CSF3 25.747252 MMP8 23.552876 MMP9 18.909662 MMP1 18.20611 MMP3 15.417225 TRAIL OOSP2 30.486296 -
TABLE 6 PLACENTA AND ITS APPENDAGES-DERIVED MSCs INCREASED MULTIPLICATION DRUG GENE FACTOR TNFα CSF2 359.60034 MMP1 157.07306 FGF13 138.73257 CSF3 52.898098 MMP9 52.12447 RSPO3 36.97124 MMP12 28.326378 LIF 20.185322 TNFβ CSF2 116.80491 MMP1 35.85062 RSPO3 33.528667 FGF13 30.268114 IFNβ ANGPTL1 67.8647 IL1α CSF3 4009.4556 CSF2 925.7604 MMP1 86.76511 MMP12 44.755383 EGF 32.053967 MMP3 30.25197 MMP20 19.222319 IL1β CSF2 2408.85 CSF3 6519.517 EGF 24.028 FGF13 18.65617 MMP1 143.90538 MMP12 87.97726 MMP3 50.21765 FGF15 CSF3 653.6217 CSF2 235.56853 MMP1 16.586615 -
TABLE 7 BONE MARROW-DERIVED MSCs INCREASED MULTIPLICATION DRUG GENE FACTOR TNFα MMP1 62.074005 MMP3 39.413765 CSF2 34.723072 RSPO3 20.590866 TNFβ MMP1 16.974045 IFNβ BTC 23.89296 DLL1 20.705479 PTN 16.424856 IFNγ ANGPTL5 98.50543 RSPO3 17.248734 MMP3 545.55664 IL1α CSF2 248.18904 MMP12 81.264694 MMP1 20.65767 CSF3 17.709955 IL1β CSF2 544.1642 MMP3 482.9409 MMP12 55.837635 NTN1 34.482384 MMP1 28.635344 CSF3 17.319433 FGF15 MMP3 46.422943 MMP1 21.592436 - In any of the experiments, it was confirmed that expression of polypeptides, growth factors and/or enzymes involved in tissue healing was enhanced in adherent cells derived from mesenchymal tissue treated with a physiologically active polypeptide. In many combinations of the physiologically active polypeptide and adherent cells derived from mesenchymal tissue, CSF2 and/or CSF3 tended to be expressed, in particular highly expressed. From these results, in the present invention, it was found that a wide variety of physiologically active polypeptides and adherent cells derived from mesenchymal tissue can be used.
- Example 7. In Vivo Tissue Healing Effect of Supernatant of ADMPCs Treated with IL-1β-Alleviation of Liver Tissue Injury
- (1) Method of Experiment
- Collection of adipose tissue from a human subject, isolation and culture of ADMPCs, and IL-1β treatment were performed in the same manner as in Example 2.
- Culture supernatant of ADMPCs treated with IL-1β was concentrated by centrifugation for 30 minutes using Amicon Ultra-15 centrifugation filter unit, 3,000 NMWL. Fifty μL/animal of the concentrated supernatant was injected from via tail vein to NASH model mice (STAM (registered trade mark) mice), and liver tissue healing was investigated. Animals were divided into the following two groups: a group to which the culture supernatant of ADMPCs treated with IL-1β was administered (n=10), and a group to which a carrier was administered (n=9). At the beginning of the study, streptozotocin was intradermally administered to animals in each group, and the animals were fed with a normal diet, fed with a high-fat diet from
week 4 to week 9, and euthanized at week 9. Administration of the culture supernatant of ADMPCs treated with IL-1β and the carrier was performed once onweek 6. The obtained liver tissue sections were subjected to Sirius red staining and hematoxylin-eosin (HE) staining. - (2) Results of Experiment
- (i) Sirius Red Staining of Liver Tissue Sections
- The results of Sirius red staining of liver tissue sections from mice obtained at week 9 of the study are shown Table 8. In the livers from mice to which the culture supernatant of ADMPCs treated with IL-1β was administered, it was confirmed that deposition of intrahepatic fibers stained with Sirius red was reduced, compared to the livers from mice to which the carrier was administered.
-
TABLE 8 group culture supernatant of IL-1β treated carrier ADMPC group Sirius red staining fibrosis region (%) 0.88 0.68 1.02 0.53 0.79 0.74 0.98 0.33 1.24 0.61 1.03 0.58 0.67 0.70 0.81 0.72 0.92 0.26 0.43 average ± standard deviation 0.93 ± 0.17 0.57 ± 0.15 Mann Whitney's U test p = 0.000944 - (ii) Evaluation of Liver Tissue Healing Effect by NAFLED Activity Score (E. M. Brunt et al. Hepatology. 2011 March; 53(3): 810-820)
- The degree of liver tissue injury in mice obtained at week 9 of the study was evaluated according to the NAFLED activity score. The evaluation method of NAFLED activity score is shown in Table 1 of Example 2.
- The results are shown in Table 9. Because the NAFLD activity score was significantly lower in the livers from mice to which the culture supernatant of ADMPCs treated with IL-1β was administered, compared to the livers from mice to which the carrier was administered, it was confirmed that injury to liver tissue represented by vacuolation, inflammation and fatty change was greatly reduced.
-
TABLE 9 culture supernatant of IL-1β treated carrier group ADMPC group NAFLD Activity Score 4 4 4 2 5 4 4 2 5 3 5 5 4 2 4 2 4 5 4 median 3 2 Median test p = 0.00712 - From these results, the culture supernatant of ADMPCs treated with IL-1β was found to be effective in healing injured tissue, and be useful for tissue protection, repair of tissue/cell injury, suppression of tissue inflammation and promotion of proliferation of cells constituting a tissue. It is considered that these tissue healings enables reconstruction of the tissue form and wound healing. Moreover, because these effects were observed in mice in which liver injury was induced by streptozotocin and high-fat diet, it can be said that IL-1β-treated ADMPCs are effective for tissue healing in chronic phase disease.
- Example 8. In Vivo Tissue Healing Effect of Supernatant of ADMPCs Treated with IL-1β-Alleviation of Lung Tissue Injury
- (1) Method of Experiment
- Collection of adipose tissue from a human subject, isolation and culture of ADMPCs, and IL-1β treatment were performed in the same manner as in Example 2.
- Fibrosis was induced in mice lunges using bleomycin (BLM). A BLM solution was administered endotracheally to mice. In particular, on the day when a BLM solution was administered, under anesthesia with 3 mL/kg of a mixed anesthetic (medetomidine hydrochloride 0.3 mg/kg,
midazolam 4 mg/kg, and butorphanol tartrate 5 mg/kg) subcutaneously administered, the neck of mice was incised, and trachea were exposed. Then, a nozzle of a liquid endotracheal administration device (IA-1C, Penn Century) was inserted through the mouth, and after confirming that it was in the trachea, a BLM solution (14 μg/25 μL/lung) was injected. Then, the incision was sutured, and 3 mL/kg of an α2 adrenergic receptor antagonist (atipamezole hydrochloride 2 mg/kg) was subcutaneously administered. - On the 21st day from BLM administration (the day of BLM administration was
day 1 of administration), IL-1β treated ADMPCs and culture supernatant thereof were administered to the test groups in the tail vein while physiological saline was administered to the control group. - On the 35th day of BLM administration, the lungs were removed after being euthanized by exsanguination from the abdominal aorta under isoflurane anesthesia. The removed lung was expanded and fixed with 10% neutral buffered formalin at a water column pressure of 20 cm, and then fixed and stored with 10% neutral buffered formalin solution.
- A formalin-fixed lung was cut out as shown in
FIG. 9 , a Masson's Trichrome (MT) stained specimen was prepared, and fibrosis was scored by classifying the degree of each lobe of the lung according to the evaluation criteria shown below. The evaluation criteria for pulmonary fibrosis are shown in Table 10. -
TABLE 10 Evaluation criteria for pulmonary fibrosis (values are scores) 0: Normal 1: Mild fibrous thickening of the alveoli or bronchial walls is observed 2: Moderate fibrous thickening of the alveoli or bronchial walls, however without overt structural changes in the lungs 3: Obvious structural changes in the lungs and formation of small fibrotic foci 4: Strong structural changes in the lungs and formation of large fibrotic foci 5: The whole lungs are replaced by fibrosis - The weighted averages were calculated from the specimens of the anterior lobe, middle lobe, posterior lobe, and accessory lobe of the left and right lungs, and used as pulmonary fibrosis scores. The pulmonary fibrosis scores shown in
FIG. 10 were calculated using the following formula. -
Weighted average of individual's pulmonary fibrosis score=[Left lung score+(Right lung anterior lobe score+Right lung middle lobe score+Right lung posterior lobe score+Right lung accessory lobe score)/4]/2 [Equation 1] - (2) Results of Experiment
- As shown in
FIG. 10 , it was confirmed that ADMPCs treated with IL-1β and culture supernatant thereof are effective in healing lung tissue. - The present invention is useful in the field of pharmaceuticals for tissue healing and in the field of study of diseases which need tissue healing.
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